>>1359922If it's actually raining, i wear my rain shell on top, pic related. It's a goretex equivalent. Rolls up very small. Both do actually fit in a jersey pocket, although not as well as a cycling/running jacket. They both layer well.
Neither have any insulation, which is good, because they pack small and I think unless there's snow on the ground, it's better to use mids/base layers to stay warm. So yes I would avoid that showers pass jacket unless you really like the visibility features, as it looks too thick. The cycling jacket is not a bad buy, but probably won't keep you dry for long in heavy rain, and won't breathe very well either. However it will pack small and be enough to put on if you're caught in a shower on a shorter commute. I wouldn't wear it, or anything water resistant and especially not water proof regularly in dry weather though.